1) Since the value of y varies directly with x, we can write
y=kx Plugging into that
-8 = k(4)
-8 = 4k Divide both sides by 4
k =-2
2) When x = -4 then we can find y by plugging into that
y = kx
y = (-2)(-4)
y = 8
3) Hence, the answer is 8
4.5m questions
5.9m answers